描述四个低收入和中等收入国家的传染病传播相关的社会行为,2021-2023年
Kristin N Nelson1, Moses C Kiti2, Machi Shiiba2
1Emory University Rollins School of Public Health, Atlanta, GA, USA. knbratt@emory.edu.
Nature communications
|October 31, 2025
概括
低收入和中等收入国家 (LMIC) 的儿童死亡率很高. 这项研究表明,儿童的接触模式在危地马拉,印度,莫桑比克和巴基斯坦之间有很大差异,与高收入国家的预测不同.
科学领域:
- 全球健康 全球健康
- 流行病学 流行病学
- 社会科学 社会科学 社会科学
背景情况:
- 传染病导致儿童死亡率显著,特别是在低收入和中等收入国家 (LMIC).
- 人与人接触是呼吸道和肠道病原体传播的主要驱动因素.
- 社会和文化规范影响接触行为,但专注于儿童的跨国比较很少.
研究的目的:
- 为了比较不同LMIC环境中儿童之间的接触模式.
- 为了确定特定年龄的接触率和高风险传播地点.
- 评估来自高收入国家的联系模型对LMIC环境的适用性.
主要方法:
- 在危地马拉,印度,莫桑比克和巴基斯坦从2021-2023年进行的基于人口的研究.
- 在两天内收集了5085名参与者的联系数据,记录了84,829个联系人.
- 分析了按年龄组和地点的接触率,区分了家庭和非家庭接触者.
主要成果:
- 一般来说,青少年 (10-19岁) 的平均接触率最高,但在巴基斯坦的年轻儿童 (5-9岁) 中最高.
- 高风险传播地点各不相同:学校 (印度),工作场所 (巴基斯坦) 和社交/休场所 (莫桑比克,危地马拉).
- 5岁以下的儿童在莫桑比克的非家庭接触比例最高,在印度最低,大多数发生在家中.
结论:
- 儿童的接触模式在LMIC之间有很大差异,并且与基于高收入国家数据的预测不一致.
- 当地数据收集对于准确了解不同人群中疾病传播动态至关重要.
- 调查结果强调需要具体的公共卫生干预措施,以减少儿童感染传染病的传播.
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